Link: Green File

About: Green File provides information from scholarly, government, and general-interest titles on all aspects of human impact on the environment. It provides indexing and abstracts for over 384,000 records. Some full text.

Dates of Coverage: varies.

Truncation: [*]. (To use truncation, enter the root of a search term and replace the ending with a truncation symbol. The search engine will then find all forms of that word. For example, type comput* to find the words computer or computing).

Wildcard: [#]= single character, [?]= multiple characters. (The wildcard is helps when the spelling of a word is incomplete. To use the wildcard, enter your search terms and replace each unknown character with the appropriate wildcard symbol. The search engine finds all citations of that word with the symbol replaced by a letter. For example, type ne?t to find all citations containing neat, nest or next). 

Search support page link.

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